Adisa ADI CD 375, Техническое руководство по установке, использованию и обслуживанию

Страница: 64 / 76

ADI CD boiler - Technical Manual
64
18.4 Gas/air adjustments
All the boilers are tested in our factory and every one is supplied with a table indicating the combustion figures. Both
the start-up and the maintenance must be carried out by authorized technical staff.
First of all verify: electric supply, if the gas connection is air vented, type of gas and pressure, if the heating demand is
at the maximum value, correct draught of the chimney, if the hydraulic installation is vented, if the pump is correctly
working...
The process would be as follows:
 First adjust the combustion at the minimum power (to avoid lockout).
 Adjust combustion at the maximum power.
 Adjust combustion at the minimum power.
 Repeat the previous steps at the minimum and maximum power.
 Once adjusted, check the combustion at the intermediate stages between the minimum and the maximum power.
Any change in the gas shut-off valve produces a change in the combustion, both at the maximum and the minimum
power. Check them alternatively until you reach the required combustion figures.
Check combustion in the main burner:

Ionization current (> 5 microamperes): connect in series the meter to the ionization electrode and to its
electric connection.

Pressure: gas (Pg), combustion chamber (Pf), air-gas mix (Pa) (similar to the values indicated in the
combustion document issued in our factory).

Gas flow.

Combustion parameters: CO
2
, O
2
, CO, flues temperature, air temperature, efficiency, water temperatures.
Models Range CO2 (%) for Natural Gas
ADI CD 70 to 120
7.3 - 9.3%
ADI CD 120 to 175
7.2 - 8.7%
ADI CD 200 to 250
7.2 - 8.4%
ADI CD 325 to 750
7.3 - 8.8%
ADI CD 850 to 950
7.7 - 9.0%
Remember that these changes must be made by specialized technicians.
18.4.1 Combustion adjustment
a) Once the boiler is operating, press the button “Selection of heating operation mode” for more than 3 seconds.
b) The boiler is now in controller stop mode. After that, press the button INFO and the display shows the percentage
of power at which the boiler is working. The function PID of the controller is disabled.
c) Press the button OK and the value of percentage will blink. Use the setting knob to select the different loads of the
boiler (full load and minimum load).
d) First adjust the combustion at the boiler maximum power.
For the combustion adjustment at the maximum power according to the boiler models, see paragraph on the next
page “Detail of the gas shut-off valve”:
e) Check the content of CO
2
with the flue analyzer (by introducing the probe inside the flues outlet of the boiler that
you are adjusting).
f) Then proceed to adjust the combustion at the boiler minimum power.
For the combustion adjustment at the minimum power according to the boiler models, see paragraph on the next
page “Detail of the gas shut-off valve”.
g) Check the content of CO
2
with the flues analyzer (by introducing the probe inside the chimney flue outlet of the
boiler that you are adjusting).
h) Repeat the previous steps both at the maximum and the minimum power until the values of CO
2
are correct at
both stages.
i) Once finished, press the button the button “Selection of heating operation mode” for more than 3 seconds to go
back to the automatic operation mode, and confirm that controller stop mode is disabled.